Spirulina is the common name for two species of cyanobacteria, or blue-green algæ. Many consider this plant nature's most powerful "green" food. Strong, grassy with a pungent sea flavor, Frontier® Spirulina Powder can be used in smoothies, seasoning mixes, in green sauces, hummus, meatballs or even brownies. Our bulk spirulina is kosher certified and non-irradiated.